Study on the fauna of Tabanidae in Gansu

The fauna of Tabanidae in Gansu were investigated by capturing with net, trapping tent luring with person or livestock and device. There are 6 genera and a total of 82 species of Tabanidae in Gansu (examing 61 of specimen; 21 from reference) Among them, 10 species of Chrysops, 6 species of Atylotus, 8 species of Haematopota, 28 species of Hybomitra, 29 species of Tabanus and I species of Isshikia. The composition and quantity of Tabanidae are different in every distribution area. In southern arras of Long Mountain there are 5 genera and a total of 31 species, and among these species, 11 species of oriental region, 8 species of palaearctic region, 12 species are widespread species, the most species are distributed at this area. While in northern hilly area, there are 5 genera and a total of 28 species, of them 18 species of palaearctic region, 10 species are widespread species. There are 5 genera and a total of 22 species in grassland area of south Gansu plateau, 18 species of palaearctic region, 4 species are widespread species. There are 2 genera and 5 species in Loess Plateau, eastern Long Mountain, 2 species of palaearctic region, 3 species are widespread species, the composition is simple and species are the least in this area. There are 5 genera and 11 species in Loess Plateau of middle part, among these species, 6 species of palaearctic region, 5 species are widespread species. There are 5 genera and 28 species in Hexi Corridor, 25 species of palaearctic region, 3 species are widespread species. There are 4 genera and 12 species in hilly area of Qilian Mountains, I I species of palaearctic region, 1 species are widespread species.